<div [(ngModel)]="language" ngbRadioGroup>
  <label class="btn btn-primary">
    <input type="radio" value="en"> English
  </label>
  <label class="btn btn-primary">
    <input type="radio" value="fr"> Français
  </label>
</div>
<hr>
<ngb-datepicker [(ngModel)]="model"></ngb-datepicker>

